Selling brand new items purchased on marketplaces in Russia. Unfortunately, I guessed the sizes wrong. T-shirt "M", but oversized. Dense cotton with elastane - very cool fabric
Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.